Simson Awo 425 S: history, specs, pictures

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Simson Awo 425 S
Manufacturer
Production 1955
Class Naked
Engine
Single Cylinder
Bore / Stroke 68.6mm x 68.6mm
Horsepower 11.94 HP (8.9 KW) @ 5500RPM
Fuel System Carburetor
Transmission Gear box: 4-Speed
Final Drive: Shaft
Suspension Front: Telescopic forks
Brakes Front: Drum
Rear: Drum
Front Tire 3.25-19
Rear Tire 3.25-19
Weight 140.0 kg (wet)
Manuals Service Manual


The Simson Awo 425 S was a Single Cylinder Naked motorcycle produced by Simson in 1955. Claimed horsepower was 11.94 HP (8.9 KW) @ 5500 RPM.

Engine[edit | edit source]

A 68.6mm bore x 68.6mm stroke result in a displacement of just 248.0 cubic centimeters.

Drive[edit | edit source]

The bike has a 4-Speed transmission.

Chassis[edit | edit source]

It came with a 3.25-19 front tire and a 3.25-19 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear.

1955 - 1962 Simson Awo 425 S[edit | edit source]

The Simson AWO 425 of 1955, built by the VEB Simson works of Suhl where Simson-Supra cars were constructed in the 1920s, strongly resembled the BMW R25 (12 hp at 5500 rpm and 62 mph).